From October 1994 until September 1999, he was the Chief of the Northwestern Center of the Federal Directorate for Currency and Export Control of Russia.

From 20 September 1999 until 12 January 2000, he led the Russian Federal Service for Currency and Export Control (VEK).

Since 12 January 2000, Kozhin has been the Head of the Presidential Property Management Department of the Russian Federation, appointed by President Vladimir Putin.

In 2008, President Dmitry Medvedev appointed him as a member of the Presidential Executive Office.

[6] On 20 March 2014, the Office of Foreign Assets Control (OFAC) published that Kozhin and 19 other men have been added to the Specially Designated Nationals List (SDN), a list of individuals sanctioned as “members of the Russian leadership’s inner circle.”[7][8][9][10][11][12]